| ofd | object-film distance |
|---|---|
| PAF | paroxysmal atrial fibrillation; peroxisomal assembly factor; phosphodiesterase-activating factor; pl... |
| RP | radial pulse; radiopharmaceutical; rapid processing [of film]; Raynaud phenomenon; reactive protein;... |
| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |
| SFD | silo filler's disease; skin-film distance; small for dates; spectral frequency distribution |
| film speed | The relative sensitivity of film emulsion to light or radiation exposure; speed is inversely related to detail resolution. (05 Mar 2000) |
|---|---|
| latitude film | Film that does not show large contrast differences with differences in exposure; the slope of the H and D curve is low. Synonym: latitude film. (05 Mar 2000) |